The wish tree

This may be folklore and some may not believe that you can make a wish on a tree with a hollow part inside. Just like wishing on a star or a fountain, the wishing well is popular so why not wish on a tree?

In the picture is a narra tree that has a small hollow part that I think would be okay to be considered a wish tree. So I took a picture and made a wish. But I cannot say the wish here, of course, that should be secret until it comes true.